Paniculate Hydrangea Silver Dollar A compact form of this usually large hydrangea, Hydrangea paniculata Silver Dollar is a medium-sized, fast-growing, deciduous shrub with a fairly upright habit. The pointed, oval leaves are a rich, deep green.  In August and September, huge conical panicles of pure white flowers appear, turning pinkish as they age. The shrub can be pruned back hard, to within a few buds of the woody framework. Paniculate hydrangea Silver Dollar holds the RHS Award of Garden Merit. Site: ShelteredSoil: Moist but well-drained, humus-rich soilPosition: Full sun or partial shadeSeason of interest: Late summer and early autumnHardiness: Fully hardyHeight: 5’ (1.5m) Spread: 5’ (1.5m)